: The perfectly linear temperature de
pendence of the resistivity observed as T&rarr\;0 in a v
ariety of metals close to a quantum critical point is a major puzzle of co
ndensed matter physics. In cuprates\, this phenomenon is observed in the v
icinity of the pseudogap critical point p*. Using high magnetic fields to
suppress superconductivity\, one can access the normal state properties do
wn to T&rarr\;0 close to this critical point. I will pre
sent high-field magneto-transport measurements of two hole-doped cuprates\
, near their respective p*\, supporting that T-linear resistivity as T&rarr
\;0 is a generic property of cuprates\, associated with
a universal scattering rate. We measured the low-T resistivity of Bi2Sr<
/span>2*&delta\;* \;just above p* [1] and found that it exhibits a T-li
near dependence\, quantitatively similar to other very different cuprates.
We also observed\, using the Drude formula\, that in various cuprates sho
wing this low-T phenomenon the slope of this T-linear resistivity is given
by a universal relation implying a specific scattering rate for charge ca
rriers: 1/�\;�\; =
&alpha\;h/2&pi\;k_{B<
/span>}T (corresponding to what is called the Plan
ckian limit [2])\, where h is Planck&rsquo\;s constant\, k~~B is
the Boltzmann constant and &alpha\; a constant of order unity. Finally\,
we directly measured the scattering rate in La~~_{
1.6}_{&minus\;}_{x}~~Nd<
/span>~~_{0.4}Sr* _{
x}*CuO

\n[1] Legros

\n[2] Zaanen\, SciPost Phys. 6\, 061 (2019)

\n[3] Gri ssonnanche